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POShared Preferences in ListFragments
 

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  1. POShared Preferences in ListFragments
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    <p>I wanted to share a string between an main activity and my list fragment. So I thought i can use Shared.Preferences. As i'm new to android and just started using shared preferences, m facing this issue.</p> <p>This is my shared preference class</p> <pre><code>public class AppPrefs { private static final String USER_PREFS = "USER_PREFS"; private SharedPreferences appSharedPrefs; private SharedPreferences.Editor prefsEditor; private String responseXml = "response_xml_prefs"; public AppPrefs(Context context){ this.appSharedPrefs = context.getSharedPreferences(USER_PREFS, Activity.MODE_PRIVATE); this.prefsEditor = appSharedPrefs.edit(); } public String getResponse_xml() { return appSharedPrefs.getString(responseXml, "unknown"); } public void setResponse_xml(String _responser_xml) { prefsEditor.putString(responseXml, _responser_xml).commit(); } } </code></pre> <p>This in my mainActivity</p> <pre><code>Context context = getApplicationContext(); AppPrefs appPrefs = new AppPrefs(context); appPrefs.setResponse_xml(responseXml); </code></pre> <p>and this in my ListFragment</p> <pre><code>Context context = this.getActivity(); AppPrefs appPrefs = new AppPrefs(context); String responseXml = appPrefs.getResponse_xml(); </code></pre> <p>but when i do <code>Log.e("responseXml", responseXml);</code></p> <p>m getting a default string "unknown" which i have soted in the shared preference class. please let me know where have i gone wrong :(</p> <p><strong>Update 1</strong> </p> <pre><code>public class TabActivity extends Activity { MyTask myNewTask; String responseXml; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Intent in = getIntent(); String requestXml=in.getStringExtra("xml"); myNewTask = new MyTask(requestXml); myNewTask.setOnResultListener(asynResult); myNewTask.execute(); ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); actionBar.setDisplayShowTitleEnabled(true); /** Creating All Tab */ Tab tab = actionBar.newTab() .setText("All") .setTabListener(new CustomTabListener&lt;AllMsgFragment&gt;(this, "All", AllMsgFragment.class,responseXml)); //.setIcon(R.drawable.android); actionBar.addTab(tab); /** Creating Success Tab */ tab = actionBar.newTab() .setText("Success") .setTabListener(new CustomTabListener&lt;SuccessMsgFragment&gt;(this, "Success", SuccessMsgFragment.class,responseXml)); //.setIcon(R.drawable.apple); </code></pre> <p>I donno how to pass the bundle</p> <pre><code>} OnAsyncResult asynResult = new OnAsyncResult() { @Override public void onResultSuccess(final int resultCode, final String responseXml) { runOnUiThread(new Runnable() { public void run() { storeData(responseXml); } }); } @Override public void onResultFail(final int resultCode, final String errorMessage) { runOnUiThread(new Runnable() { public void run() { } }); } }; void storeData(String responseXml){ //this.responseXml=responseXml; /*Context context = getApplicationContext(); AppPrefs appPrefs = new AppPrefs(context); appPrefs.setResponse_xml(responseXml);*/ Fragment fragment = new Fragment(); Bundle bundle = new Bundle(); bundle.putString("responseXml", responseXml); fragment.setArguments(bundle); } </code></pre> <p>}</p> <p>its showing null pointer exception</p> <p><strong>Edit 2</strong></p> <p>Using a static variable solved my issue</p>
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